Cutting segment, method for manufacturing cutting segment, and cutting tool comprising the same
a cutting tool and cutting technology, applied in the field of cutting tool segments, can solve the problems of deteriorating cutting efficiency of cutting tools, reducing the cutting efficiency of diamond particles and reducing life span, and non-uniform distribution of diamond particles among metal powders, so as to reduce manufacturing costs, improve cutting ability, and simplify manufacturing process
Active Publication Date: 2011-08-23
NIWA DAIYAMONDO INDS +1
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The solution ensures uniform diamond distribution, enhancing cutting efficiency and tool lifespan while simplifying the manufacturing process and reducing costs by eliminating the need for complex powder metallurgy steps.
Problems solved by technology
As mentioned above, when the diamond particles are mixed with the metal powders, the diamond particles are not uniformly distributed among the metal powders, resulting in decreased cutting efficiency of the diamond particles and reduction in life span.
That is, when mixing the diamond particles and the metal powders acting as the matrix, differences in sizes and specific gravities between the particles cause segregation of the diamond particles, thereby generating non-uniform distribution of the diamond particles among the metal powders.
When the diamond particles are segregated as described above, not only is the cutting efficiency of the cutting tool deteriorated, but the life span of the cutting tool is also reduced.
Although the patterning technology for the diamond particles can solve the problems caused by the segregation of the diamond particles, intrinsic problems caused by the use of the powdered metal matrix cannot be solved.
During the process of compacting the metal matrix, due to severe wear of a compaction die by the diamond particles, variation in the thickness of the matrix or breakage of the matrix frequently occurs, thereby lowering productivity.
Furthermore, in severe cases, dimensions of the matrix are changed, so that the segments have different dimensions, respectively, resulting in performance variation and deterioration of the diamond tool.
Further, even though the metal powders for the matrix can be manufactured by various methods using the same components, manufacturing costs of the metal powders are remarkably high compared with a bulk of metal having a different shape, such as plate, coil, rod, and the like.
Method used
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Embodiment Construction
[0043]Various embodiments within the scope of the invention will now be described in detail with reference to the accompanying drawings.
[0044]The present invention can be applied to a segment for a cutting tool used for cutting or drilling brittle workpieces, such as stone, brick, concrete and asphalt, and a cutting tool comprising the segments.
[0045]The segment for the cutting tool comprises diamond particles directly performing a cutting operation when cutting the workpieces, and metal matrices holding the diamond particles.
[0046]Conventionally, powdered metal matrices have been used when manufacturing the segment.
[0047]When manufacturing the segment using the powdered metal matrices, there are problems in that the diamond particles are segregated, reducing not only cutting efficiency of the cutting tool, but also life span thereof.
[0048]Further, when manufacturing the segment using the powdered metal matrices, a process of mixing the diamond particles and the metal powders, a pro...
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Abstract
A cutting segment for a cutting tool used for cutting or drilling brittle workpieces, such as stone, brick, concrete and asphalt, a method for manufacturing the segment, and a cutting tool comprising the segment are disclosed. The segment comprises layers of diamond particles and two kinds of plate-shaped metal matrix layers comprising soft and hard metal matrix layers having different ductility. The plate-shaped metal matrix layers are arranged perpendicular to a cutting surface while being parallel to a cutting direction, and are alternately stacked perpendicular to the cutting direction. The layers of diamond particles are suitably arranged in the plate-shaped soft and hard metal matrix layers. The segment and the cutting tool comprising the same have excellent cutting ability, and the manufacturing process thereof can be simplified, thereby remarkably enhancing productivity.
Description
TECHNICAL FIELD[0001]The present invention relates to a cutting segment for a cutting tool used for cutting or drilling brittle workpieces, such as stone, brick, concrete and asphalt, a method for manufacturing the segment, and a cutting tool comprising the segment. More particularly, the present invention relates to a cutting segment for a cutting tool, which uses a plate-shaped metal matrix instead of a powdered metal matrix, a method of manufacturing the segment, and a cutting tool comprising the segment.BACKGROUND ART[0002]In order to cut or drill brittle workpieces, such as stone, brick, concrete and asphalt, it is necessary to provide an abrasive material having hardness higher than that of the workpieces.[0003]As for the abrasive material, synthetic diamond particles, natural diamond particles, nitrogen boride and cemented carbide are well known in the art, and particularly, the synthetic diamond particles have been most widely used in the art of cutting tools among these mat...
Claims
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IPC IPC(8): B24B7/00B28D1/00
CPCB23D61/18B23P15/28B24D5/123B24D99/005B28D1/121B02C4/06B02C11/00
InventorKIM, SOO-KWANGPARK, HEE-DONG
OwnerNIWA DAIYAMONDO INDS